US3390738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable muffler with deformable end plates and rolled pipe joints
Assignee: Individual
•
Filing: 1966-04-05
•
Granted: 1968-07-02
•
Expires: 1986-04-05
Abstract
No abstract record available.
Inventors
- 👤 Donald L Kirsch
- 👤 Peter C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:04
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/185; F01N1/00; F01N1/08; F16; F16L; F16L55/00; F16L55/02; F16L55/027; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/18; F01N2490/00; F01N2490/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US801796A
Cited
US956170A
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US1278965A
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US1595304A
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US1735789A
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US1761971A
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US2151702A
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US2511597A
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US2690812A
Cited
US2834425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |